American Journal of Physiology-Cell Physiology
Isoform-specific modulation of PI3K/Akt1 signaling by Orai channels in estrogen receptor-positive breast cancer
Orai1 and Orai3 exert opposing effects on the PI3K/Akt1 pathway, revealing a complex regulatory mechanism to coordinate cellular processes, such as survival, in ER+ breast cancer cells. Although Orai3 promotes Akt1 activation via CaMKK to drive tumor progression, Orai1 acts as a modulator on this axis through an AC8/cAMP-dependent mechanism. These findings highlight the functional diversity of Orai proteins and identify them as potential therapeutic targets for modulating Akt1-driven aggressiveness in breast cancer …